of owe.
2. ought (·noun & ·adv) ·see aught.
3. ought ·impf, ·p.p., or ·v·aux owned; possessed.
4. ought ·impf, ·p.p., or ·v·aux was or were under obligation to pay; owed.
5. ought ·impf, ·p.p., or ·v·aux to be bound in duty or by moral obligation.
6. ought ·impf, ·p.p., or ·v·aux to be necessary, fit, becoming, or expedient; to behoove;
in this sense formerly sometimes used impersonally or without a subject expressed.